"Pilots and other experts say this type of bomb "can be aimed through a window"." - Haaretz These bombs cannot be aimed thru a window because they are not laser guided. (But don't tell it to the Saudis, they might be buying a pig in a poke.) To be very accurate the bomb needs to communicate with a satellite during its fall to correct its trajectory. I imagine that if such bombs falls into the wrong hands, say when the regime is overthrown, the US will be able to disallow its satellites to transmit the information.
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from the article: Gates says Washington to sell smart bombs to Saudi Arabia